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      1 /*
      2  *  Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
      3  *
      4  *  Use of this source code is governed by a BSD-style license
      5  *  that can be found in the LICENSE file in the root of the source
      6  *  tree. An additional intellectual property rights grant can be found
      7  *  in the file PATENTS.  All contributing project authors may
      8  *  be found in the AUTHORS file in the root of the source tree.
      9  */
     10 
     11 #ifndef WEBRTC_SYSTEM_WRAPPERS_SOURCE_EVENT_POSIX_H_
     12 #define WEBRTC_SYSTEM_WRAPPERS_SOURCE_EVENT_POSIX_H_
     13 
     14 #include "webrtc/system_wrappers/include/event_wrapper.h"
     15 
     16 #include <pthread.h>
     17 #include <time.h>
     18 
     19 #include "webrtc/base/platform_thread.h"
     20 
     21 namespace webrtc {
     22 
     23 enum State {
     24   kUp = 1,
     25   kDown = 2
     26 };
     27 
     28 class EventTimerPosix : public EventTimerWrapper {
     29  public:
     30   EventTimerPosix();
     31   ~EventTimerPosix() override;
     32 
     33   EventTypeWrapper Wait(unsigned long max_time) override;
     34   bool Set() override;
     35 
     36   bool StartTimer(bool periodic, unsigned long time) override;
     37   bool StopTimer() override;
     38 
     39  private:
     40   static bool Run(void* obj);
     41   bool Process();
     42   EventTypeWrapper Wait(timespec* end_at);
     43 
     44  private:
     45   pthread_cond_t  cond_;
     46   pthread_mutex_t mutex_;
     47   bool event_set_;
     48 
     49   // TODO(pbos): Remove scoped_ptr and use PlatformThread directly.
     50   rtc::scoped_ptr<rtc::PlatformThread> timer_thread_;
     51   rtc::scoped_ptr<EventTimerPosix> timer_event_;
     52   timespec       created_at_;
     53 
     54   bool          periodic_;
     55   unsigned long time_;  // In ms
     56   unsigned long count_;
     57 };
     58 
     59 }  // namespace webrtc
     60 
     61 #endif  // WEBRTC_SYSTEM_WRAPPERS_SOURCE_EVENT_POSIX_H_
     62